How to use the example code files

The repository’s root contains four folders: Part1/, Part2/, Part3/, and Appendix/. In each you will find the folders for the part’s chapters: Chapter01/ to Chapter04/ in Part1/, Chapter05/ to Chapter14/ in Part2/, and Chapter15/ to Chapter19/ in Part3/. The Appendix/ folder contains additional content that is not part of the printed book. The main README.md file provides an overview of each folder.

Each chapter folder contains subfolders with commented code examples from the chapter’s sections. It also may contain a data/ folder, with the data used in that chapter, and js/ and css/ folders, with shared scripts and stylesheets used by multiple code examples. The README.md file in the Part and Chapter folders describes the contents of each subfolder.

All code snippets in the book were extracted from existing code. In each chapter, the path to this code is indicated in the text or in image captions (for images generated from code) and is relative to the chapter’s folder. For example, if the relative path Canvas/2-canvas-map.html is mentioned in Chapter 2, you will find it in Part1/Chapter02/Canvas/2-canvas-map.html starting from the root of the repository.

In many chapters, you can also enter code snippets as you read by typing them in your browser’s console instead of loading full code examples, after loading a page especially set up to allow console interaction.